#2B48A3
Closest named color: Cobalt (#1E488F). oklch(43.5% 0.151 266.6), rgb(43, 72, 163).
Aa
White text reads best on this color (8.20:1).
About this color
#2B48A3 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.151 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.036 away. White text reads best on it, at 8.20:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.55:1 |
| White text | 8.20:1 |
Values
| HEX | #2B48A3 |
| RGB | rgb(43, 72, 163) |
| HSL | hsl(226, 58%, 40%) |
| OKLCH | oklch(43.5% 0.151 266.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2B48A3 | 8.20:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #2B48A3 | 2.55:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #2B48A3 text on white | 8.20:1 | AAA | Lc 87.9 | Fine for body text |
| #2B48A3 text on black | 2.55:1 | Fails | Lc -14.2 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A7C0FB
oklch(81% 0.088 266.6)
-
Step 400
400
#789CF9
oklch(70.7% 0.142 266.8)
-
Step 500
500
#5780F5
oklch(63% 0.181 266.7)
-
Step 600
600
#3F66E4
oklch(55.5% 0.196 266.8)
-
Step 700
700
#3154C6
oklch(49.1% 0.182 266.5)
-
Step 800
800 (this color)
#2B48A3
oklch(43.5% 0.151 266.6)
-
Step 900
900
#253C7F
oklch(37.8% 0.117 266.5)
-
Step 950
950
#16244A
oklch(27.1% 0.073 266.4)
#2B48A3 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0055A6 | 0.037 |
| Deuteranopia (no green cones) | #004AA1 | 0.026 |
| Tritanopia (no blue cones) | #005E6E | 0.121 |
| Achromatopsia (no color) | #4F4F4F | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B48A3
#2B48A3
oklch(43.5% 0.151 266.6)
- #664D00
#664D00
oklch(43.5% 0.089 87.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2B48A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Blueberry #464196 ΔE 0.041
- Sapphire #2138AB ΔE 0.044
- Dusk Blue #26538D ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.057
- Blue Blue #2242C7 ΔE 0.060
- Light Navy #155084 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.067
Use #2B48A3 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.